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' 05 February 2001 <br /> AGE-NC Project No. <br /> ' Page 4of7 <br /> preservative. The.sample containers were then labeled with the monitoring well. designation, date, <br /> time of sampling and the sampler's initials. The samples were transported in a chilled container <br /> under.chain of custody to Alpha Analytical Laboratory•(AAL) ,a DHS-certified analytical laboratory <br /> for analysis. The samples,were analyzed for: <br /> Total petroleum hydrocarbons quantified as gasoline,(TPH-g) in accordance with EPA <br /> Method 8015-Modified, <br /> • Total petroleum hydrocarbons quantified as diesel (TPH-d).in accordance with EPA Method . <br /> 8015 Modified, <br /> • Volatile aromatic,compounds; specifically benzene,toluene,ethylbenzene,.and total xylenes <br /> (BTEX)with methyl tertiary butyl ether(MTBE)iri accordance with EPA Method 8020, and <br /> Oxygenated fuel additives: MTBE,tertiary butyl alcohol (TBA), di-isopropyl ether(DIPE), <br /> ethyl tertiary butyl ether(ETBE) and tertiary amyl methyl ether(TAME) in accordance with <br /> EPA-Method 8260-Modified. <br /> Chain-of-custody protocols were used to document sample custody transfers from the field to.the <br /> analytical laboratory. Sample chain-of-custody forms and laboratory reports are provided in <br /> Appendix C. <br /> 3.0. FINDINGS <br /> A•discussion of laboratory results of soil samples collected during the well installation.is detailed <br /> below. Ground water elevations were determined by subtracting the measured depths-to-water.froin <br /> the surveyed casing elevations. Ground water flow directions were determined by contouring the ' <br /> 'water elevations on a scaled site plan(Figure 3). <br /> 3.1. STRATIGRAPHY <br /> ' The soil profile-generally.consisted of sand at five and ten feet bsg. Clay with varying percentages.of silt was encountered.from approximately 10 feet to 30 feet bsg. In boring MW6, poorly graded <br /> sand was encountered at 30 feet bsg and fined into a clayey sand at 35 feet bsg.'Clay was _ <br /> encountered from 36 feet to 40 feet bsg in boring MW6. Saturated conditions were encountered at <br /> ' 10 feet bsg (Appendix A). <br /> 1 <br /> ' Advanced GcoEnvironmental,Inc. r <br />